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PROSTAT PFM-711B Electrostatic Field Meter

HAND HELD FIELD METER LOCATES AND MEASURES ELECTROSTATIC FIELD DENSITY

  • Lightweight, portable, hand-held Field Meter
  • Measure in 1 volt/in increments 0 to ±1,999 Volts
  • Measure in 10 V/in increments 0 to ±20,000 Volts
  • Accuracy of <±5%
  • LED ranging lights help position the meter at the right distance
  • Zero button allows the display to be adjusted to zero (0)
  • Hold feature freezes the measurement on the display
  • Use with Prostat CPM-720B Charge Plate Monitor and PCS-730B
  • Electrostatic Charger
  • Use with Prostat PGA-710B AutoAnalysis System or X-Y Plotter
  • Analyze Footwear/Flooring Combinations
  • Verify Ionizer Balance and Decay Time Performance
  • 2-year Limited Warranty (1 year on the sensor)

Download datasheet

Download user manual

Uses a Chopper-Stabilized Sensor

The PFM-711B is an accurate, portable electrostatic field measuring device that is easy to use and designed for one hand operation. The PFM-711B is a digital, electronic chopper design, which allows the instrument to make electrostatic field measurements in areas where ionized air is present. Used by itself, the PFM-711B will measure electrostatic fields emanating from virtually any flat surface or object.

Measure in 1 Volt and 10 Volt Increments

The PFM-711B uses a dual range for measuring surface voltage and electrostatic potentials in both positive and negative polarity charges. In the kV/Inch range, the PFM-711B will indicate electrostatic field voltage from 0 to ±20,000 volts in 10 volt increments at 1" (25mm) distance from the charged surface. In the V/Inch range, the field meter measures field density from 0 to ±1,999 volts in 1 volt increments at 1" (25mm) distance from the charged surface. The instrument is easy to use and its controls are designed for one hand operation.

Provides a Ground Reference

The PFM-711B Fieldmeter case is conductive. It provides the ground reference for its measuring circuit. For accurate measurements, it is necessary that the person holding the meter be properly grounded, or the meter has a ground connection made to the 10 mm snap fastener mounted on back of case. Ground the case by wearing a functional wrist strap that is properly grounded. Turn the meter on and select the desired range. Adjust the display to zero (0) volts by pressing the ZERO control.

Bulls Eye for Accurate Measurements

The ranging lights help position the instrument for accurate measurements. Align the front sensor of the PFM-711B Field Meter approximately 1" (25mm) from the surface or object being measured. Move the instrument toward, or away from the surface until the ranging lights are focused on the test surface. Once the field meter is properly positioned, the PFM-711B will indicate the electrostatic field measured on its display.

Use it with a Recording Device

The PFM-711B is the most flexible field meter in the ESD control marketplace. Combined with a variety of accessories, it can perform many different measurements to analyze the static sensitive process or environment.The analog output allows documentation of measurements when used in conjunction with X-Y plotter, analog data recording device, or the Prostat PGA-710B Autoanalysis System. (Recording device and cable not included.)

Long Lasting Battery

The PFM-711B uses a 9 volt alkaline battery (included), which provides an approximate life of 30 hours. The display is designed to indicate when the battery is low. The low battery indicator is conveniently programmed to come in at 7.2 DC volts, which is the minimum voltage required for accurate measurements.

PERFORMANCE   
Overall Range Low Range: 0 V to ±1999 V High Range: 0 V to ±19.99 kV 
Accuracy Voltage Monitor Output: Better than ±5% of reading, ±10 mV Voltage Display: Better than ±5% of reading, ±2 counts
Stability ±10 counts
VOLTAGE MONITOR  
Output ±20.0 kV meter reading equals ±2.0 Volt output
Ratio Low Range: 0 to 2,000 volts is equal to ±0.2 volts output High Range: 0 to 20,000 volts is equal to ±2 volts output
FRONT PANEL
Display Number of Characters: 3.5 digits Character Format: 7-Segment Character Size: 12.70mm H x 7.62mm W Automatic polarity, LOW BATTERY indicator
Range V / Inch: 0 to ±1999 V / inch
kV / Inch: 0 to ±19.99 kV / inch
Display Resolution Low Range: 1 Volt increment
High Range: 10 Volts increments
Sampling Rate Display readings are updated every 0.5 seconds Analog readings are taken every 100mS, or 10 times per second
Low Battery Low battery indicator comes on at 7.4 Volts
POWER
Input 9 VDC alkaline battery included
Battery Life Approx. 20 hours (of continuous use)
GROUNDING
Case Circuit grounded through conductive case
Ground Snap 10 mm snap fastener mounted on back of case
MEASUREMENT DISTANCE
1" ± 1/64" (25mm ± 0.5mm) LED distance indicator
aligned targets indicate 1 inch (25 mm)
CONTROLS
Keypad A custom membrane controls the different functions
ON/OFF Short press to turn the instrument ON Long press to turn the instrument OFF
Range Selects between V/Inch (0-2000V) and kV/Inch (0-20kV)
Zero Adjusts the displayed value to Zero (0)
Hold Captures and holds a stable measurement
OUTPUT
Analog Output 2.5 mm jack (3/32”) audio jack 2 Volts output corresponds to 20 kV
Response Time Less than 180ms (90-10%)
Sensor Noise Signal (Typical)1 Maximum Voltage: +3 volts Minimum Voltage: -5 volts
ENVIRONMENT
Operating Temperature 10°C to 30°C (50°F to 80°F)
Operating Relative Humidity 0% – 80%, non-condensing
Operating Altitude 2000 m
PHYSICAL SPECIFICATIONS
Size (with ground snap attached) 27.2 mm x 61.5 mm x 105.9 mm
1.07” x 2.41” x 4.17”
Weight 142 g (5.0 oz.) with battery
WARRANTY
2 years on circuit board, display and membrane
1 year on sensor2

1 Typical specifications are not guaranteed.
2 Warranty on the sensor limited to a defective sensor that was not dropped or used for measuring a source greater than 20kV.

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PFM-711B Electrostatic Field Meter {PFM-711B}

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